Plum Bob Spool

thingiverse

I designed this to fit a Swanson hexagonal plum bob perfectly. The inside edge of the opening features a small lip, ensuring the plum bob goes in snugly when inserted. Once past the lip, it's looser but still easy to pull back out smoothly. The end of this bob has a metal ring for hanging the plum bob securely. The spool's end boasts several pegs for that ring to attach to, preventing the spool from unspooling. The magnet channel can hold up to five small magnets designed specifically for these: https://amzn.to/2qaC9S3 Magnet dimensions are 2mm tall with a diameter of 6mm. Even the strongest magnet of this size won't allow the plum bob to hang freely from the spool when attached magnetically, due to the bob's considerable weight. The magnets have other uses, but they're not essential. This project was created using Tinkercad. You can edit it online at https://www.tinkercad.com/things/gJQLcX0AxEs.